JP2002066595A - Treating equipment for sludge - Google Patents
Treating equipment for sludgeInfo
- Publication number
- JP2002066595A JP2002066595A JP2000260136A JP2000260136A JP2002066595A JP 2002066595 A JP2002066595 A JP 2002066595A JP 2000260136 A JP2000260136 A JP 2000260136A JP 2000260136 A JP2000260136 A JP 2000260136A JP 2002066595 A JP2002066595 A JP 2002066595A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- tank
- pressure tank
- preliminary
- low
- 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
Landscapes
- Treatment Of Sludge (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、汚泥の処理装置に
関し、特に、汚泥中の微生物の細胞膜を減圧によって破
壊することにより、汚泥の可溶化処理を、簡便で安全か
つ省エネルギー的に行うことができる汚泥の処理装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating sludge, and more particularly to a method for solubilizing sludge in a simple, safe and energy-saving manner by destroying cell membranes of microorganisms in sludge by decompression. The present invention relates to an apparatus for treating sludge.
【0002】[0002]
【従来の技術】従来、下水等の有機性汚水を微生物によ
り生物処理し、余剰汚泥として排出する活性汚泥処理法
が採用されている。この活性汚泥処理法では、処理する
有機性汚水量に応じて、余剰汚泥が排出されるため、こ
の余剰汚泥を処理する必要が生じる。この余剰汚泥の処
分に際し、運転費用の高騰や、最終処分地の減少等の問
題を解決するために、余剰汚泥が水処理系外に排出され
ない汚泥の可溶化処理が提案されている。2. Description of the Related Art Conventionally, an activated sludge treatment method in which organic wastewater such as sewage is biologically treated with microorganisms and discharged as surplus sludge has been adopted. In this activated sludge treatment method, surplus sludge is discharged according to the amount of organic wastewater to be treated, so that it becomes necessary to treat the surplus sludge. In order to solve such problems as a rise in operating costs and a decrease in final disposal sites when disposing of the excess sludge, a solubilization treatment of the sludge in which the excess sludge is not discharged out of the water treatment system has been proposed.
【0003】可溶化処理の方法としては、超音波によっ
て汚泥を可溶化する方法、汚泥を高温に加熱し高圧下と
して細胞壁を分解し可溶化する方法、水酸化ナトリウム
水溶液等のアルカリ性薬品を用いる方法、オゾンにより
細胞壁を分解する方法等が提案されている。[0003] As a method of solubilization treatment, a method of solubilizing sludge by ultrasonic waves, a method of heating sludge to a high temperature and applying high pressure to decompose and solubilize cell walls, and a method of using an alkaline chemical such as aqueous sodium hydroxide solution. A method of decomposing cell walls with ozone and the like have been proposed.
【0004】[0004]
【発明が解決しようとする課題】ところが、上記従来の
超音波による可溶化方法では、細胞を壊れやすい性状に
変化させることが難しいという問題があり、また、汚泥
を高温・高圧にする方法では、エネルギーの消費量が多
くなって処理費が高くなるという問題がある。さらに、
アルカリ性薬品を使用する方法では、薬品による2次公
害が発生する可能性があり、また、オゾンによる方法で
は、オゾンの安全に関する取り扱い等に困難さが伴うと
いう問題があった。However, the conventional method of solubilization using ultrasonic waves has a problem that it is difficult to change cells into a fragile state. There is a problem that energy consumption increases and processing costs increase. further,
The method using an alkaline chemical may cause secondary pollution due to the chemical, and the method using ozone has a problem that it is difficult to handle ozone safely.
【0005】本発明は、上記従来の汚泥の処理方法が有
する問題点に鑑み、汚泥中の微生物の細胞膜を破壊する
ことにより、汚泥の可溶化処理を、簡便で安全かつ省エ
ネルギー的に行うことができる汚泥の処理装置を提供す
ることを目的とする。The present invention has been made in view of the above-mentioned problems of the conventional method for treating sludge, and it has been found that the solubilization of sludge can be carried out simply, safely and energy-saving by destroying the cell membrane of microorganisms in the sludge. It is an object of the present invention to provide a sludge treatment device that can be used.
【0006】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明の汚泥の処理装置は、汚泥を封入して密閉可
能とした減圧槽と、該減圧槽内を減圧し、汚泥中の微生
物の細胞膜を破壊する減圧手段とを備えたことを特徴と
する。Means for Solving the Problems To achieve the above object, a sludge treatment apparatus of the present invention comprises a decompression tank capable of sealing and sealing sludge, and depressurizing the decompression tank to remove microorganisms in the sludge. And a decompression means for destroying the cell membrane.
【0007】本発明の汚泥の処理装置は、汚泥を封入し
た減圧槽を急激に減圧することにより、微生物の細胞壁
内の微細気泡を拡大させ、細胞壁を破壊することが可能
であり、単に減圧するのみで、特別な熱源や物質を使う
ことがないことから、汚泥の可溶化処理を、簡便で安全
かつ省エネルギー的に行うことができる。The sludge treatment apparatus of the present invention is capable of expanding the microbubbles in the cell wall of microorganisms and rapidly destroying the cell wall by rapidly reducing the pressure in the decompression tank containing the sludge. Only, no special heat source or substance is used, so that the sludge solubilization treatment can be performed simply, safely and energy-saving.
【0008】この場合において、減圧手段を、減圧槽よ
り容量の大きい予備減圧槽と、該予備減圧槽内を減圧す
る真空ポンプと、減圧槽と予備減圧槽を開閉可能に接続
するバルブとを備えて構成し、減圧した予備減圧槽と減
圧槽をバルブを開いて連通させ、減圧槽の圧力を急激に
低下させることができる。In this case, the pressure reducing means is provided with a preliminary pressure reducing tank having a capacity larger than that of the pressure reducing tank, a vacuum pump for reducing the pressure in the preliminary pressure reducing tank, and a valve for opening and closing the pressure reducing tank and the preliminary pressure reducing tank. By opening a valve between the preliminarily depressurized tank and the depressurized tank, the pressure in the depressurized tank can be rapidly reduced.
【0009】これにより、簡単な装置で減圧槽内を急激
に減圧することができ、微生物の細胞膜の破壊をより確
実に行うことができる。Thus, the pressure in the decompression tank can be rapidly reduced by a simple device, and the cell membrane of microorganisms can be more reliably destroyed.
【0010】[0010]
【発明の実施の形態】以下、本発明の汚泥の処理装置の
実施の形態を図面に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sludge treatment apparatus according to the present invention will be described below with reference to the drawings.
【0011】図1に、本発明の汚泥の処理装置の一実施
例を示す。図において1は汚泥貯留槽であり、この汚泥
貯留槽1は、汚泥ポンプ10及びバルブ21、23を備
えた配管5を介して、減圧槽2に接続されている。この
汚泥貯留槽1は、汚泥ポンプ10、配管5を経て減圧槽
2に汚泥を供給可能とされ、また、減圧槽2は、バルブ
24を備えた配管7を介して予備減圧槽3に接続されて
いる。FIG. 1 shows an embodiment of the sludge treatment apparatus of the present invention. In the figure, reference numeral 1 denotes a sludge storage tank, and this sludge storage tank 1 is connected to a decompression tank 2 via a pipe 5 having a sludge pump 10 and valves 21 and 23. The sludge storage tank 1 is capable of supplying sludge to the decompression tank 2 via a sludge pump 10 and a pipe 5, and the decompression tank 2 is connected to the preliminary decompression tank 3 via a pipe 7 having a valve 24. ing.
【0012】また、配管5のバルブ21とバルブ23の
間には、生物処理を行う生物反応槽(図示省略)に通じ
る配管6が接続されている。この配管6は、バルブ22
とポンプ11とを備え、汚泥貯留槽1、減圧槽2、及び
予備減圧槽3を、それぞれ配管5、7を介して直列的に
接続している。A pipe 6 is connected between the valve 21 and the valve 23 of the pipe 5 to communicate with a biological reaction tank (not shown) for performing biological treatment. This pipe 6 is connected to a valve 22
And a pump 11. The sludge storage tank 1, the decompression tank 2, and the preliminary decompression tank 3 are connected in series via pipes 5, 7, respectively.
【0013】一方、予備減圧槽3には、配管8を介して
脱臭装置4が接続されている。この配管8には、予備減
圧槽3を減圧する真空ポンプ12と、真空ポンプ12と
予備減圧槽3の間で配管8を開閉するバルブ25とが配
設されている。On the other hand, a deodorizing device 4 is connected to the preliminary pressure reducing tank 3 via a pipe 8. The pipe 8 is provided with a vacuum pump 12 for depressurizing the preliminary pressure reducing tank 3 and a valve 25 for opening and closing the pipe 8 between the vacuum pump 12 and the preliminary pressure reducing tank 3.
【0014】次に、この汚泥の処理装置の作用を説明す
る。まず、予備減圧槽3のバルブ25を開に、バルブ2
4を閉として、真空ポンプ12を起動することにより、
予備減圧槽3の内部を所定の真空圧まで減圧する。この
場合、真空ポンプ12からの排気は、配管8に接続され
た脱臭装置4により脱臭された後、大気中へ排出され
る。Next, the operation of the sludge treatment apparatus will be described. First, the valve 25 of the preliminary pressure reducing tank 3 is opened, and the valve 2 is opened.
By closing 4 and activating the vacuum pump 12,
The inside of the preliminary pressure reducing tank 3 is reduced to a predetermined vacuum pressure. In this case, the exhaust gas from the vacuum pump 12 is deodorized by the deodorizing device 4 connected to the pipe 8, and then discharged to the atmosphere.
【0015】予備減圧槽3の圧力が設定値となるまで低
下した後、バルブ21、23を開けてポンプ10を駆動
させ、汚泥貯留槽1の汚泥を、減圧槽2に配管5を経て
送り込むようにする。なお、このとき、生物反応槽に通
じる配管6のバルブ22は閉じられている。このよう
に、減圧槽2に汚泥を所定量送り込んだ後、ポンプ10
を停止するとともに、バルブ21、23を閉じ、予備減
圧槽3と減圧槽2の間のバルブ24を短時間で開にす
る。これにより、減圧されている予備減圧槽3によって
減圧槽2の圧力が急激に下がる。After the pressure in the preliminary decompression tank 3 has decreased to a set value, the valves 21 and 23 are opened to drive the pump 10 so that the sludge in the sludge storage tank 1 is sent to the decompression tank 2 via the pipe 5. To At this time, the valve 22 of the pipe 6 leading to the biological reaction tank is closed. After the predetermined amount of sludge is fed into the decompression tank 2 in this manner, the pump 10
Is stopped, the valves 21 and 23 are closed, and the valve 24 between the preliminary pressure reducing tank 3 and the pressure reducing tank 2 is opened in a short time. As a result, the pressure in the pressure reducing tank 2 is rapidly reduced by the reduced pressure of the preliminary pressure reducing tank 3.
【0016】その結果、減圧槽2内に供給された汚泥も
減圧の影響を受け、汚泥内の微生物の細胞内の気泡が負
圧により拡大し、細胞壁が破壊される。このように、微
生物の細胞壁が破壊された汚泥は、バルブ21、24を
閉じ、バルブ22、23を開けた状態で、ポンプ11を
駆動することにより、減圧槽2から生物反応槽に戻され
る。As a result, the sludge supplied into the decompression tank 2 is also affected by the decompression, and the intracellular bubbles of the microorganisms in the sludge are expanded by the negative pressure, and the cell wall is destroyed. As described above, the sludge in which the cell wall of the microorganism has been destroyed is returned from the decompression tank 2 to the biological reaction tank by driving the pump 11 with the valves 21 and 24 closed and the valves 22 and 23 opened.
【0017】反応槽に戻された汚泥は、微生物の細胞壁
が破壊されているので、細胞の中の有機物は他の微生物
によって分解される。以上の手順を繰り返すことによ
り、汚泥貯留槽1に供給された汚泥は、バッチ方式で微
生物の細胞壁が破壊され、可溶化処理される。The sludge returned to the reaction tank has the cell walls of the microorganisms destroyed, so that organic matter in the cells is decomposed by other microorganisms. By repeating the above procedure, the sludge supplied to the sludge storage tank 1 is subjected to the solubilization treatment in which the cell walls of the microorganisms are destroyed in a batch system.
【0018】[0018]
【発明の効果】本発明の汚泥の処理装置によれば、汚泥
を封入した減圧槽を急激に減圧することにより、微生物
の細胞壁内の微細気泡を拡大させ、細胞壁を破壊するこ
とが可能であり、単に減圧するのみで、特別な熱源や物
質を使うことがないことから、汚泥の可溶化処理を、簡
便で安全かつ省エネルギー的に行うことができる。According to the sludge treatment apparatus of the present invention, it is possible to enlarge microbubbles in the cell wall of microorganisms and to destroy the cell wall by rapidly reducing the pressure in the vacuum tank in which the sludge is sealed. Since the pressure is merely reduced and no special heat source or substance is used, the solubilization treatment of the sludge can be performed simply, safely and energy-saving.
【0019】また、減圧手段を、減圧槽より容量の大き
い予備減圧槽と、予備減圧槽内を減圧する真空ポンプ
と、減圧槽と予備減圧槽を開閉可能に接続するバルブと
を備えて構成し、減圧した予備減圧槽と減圧槽をバルブ
を開いて連通させ、減圧槽の圧力を急激に低下させるこ
とにより、簡単な装置で減圧槽内を急激に減圧すること
ができ、微生物の細胞膜の破壊をより確実に行うことが
できる。Further, the pressure reducing means includes a preliminary pressure reducing tank having a larger capacity than the pressure reducing tank, a vacuum pump for reducing the pressure in the preliminary pressure reducing tank, and a valve for connecting the pressure reducing tank and the preliminary pressure reducing tank to be openable and closable. By opening the valve between the decompressed preliminary decompression tank and the decompression tank and opening the valve, the pressure in the decompression tank is rapidly reduced, so that the pressure inside the decompression tank can be rapidly reduced by a simple device, and the cell membrane of microorganisms is destroyed. Can be performed more reliably.
【図1】本発明の汚泥の処理装置の一実施例を示す概要
図である。FIG. 1 is a schematic diagram showing one embodiment of a sludge treatment apparatus of the present invention.
1 汚泥貯留槽 2 減圧槽 3 予備減圧槽 4 脱臭装置 5〜8 配管 10、11 ポンプ 12 真空ポンプ 21〜25 バルブ DESCRIPTION OF SYMBOLS 1 Sludge storage tank 2 Decompression tank 3 Preliminary decompression tank 4 Deodorizing device 5-8 Piping 10, 11 Pump 12 Vacuum pump 21-25 Valve
───────────────────────────────────────────────────── フロントページの続き (72)発明者 浜田 英明 兵庫県尼崎市下坂部3丁目11番1号 日立 機電工業株式会社内 (72)発明者 安東 卓也 兵庫県尼崎市下坂部3丁目11番1号 日立 機電工業株式会社内 (72)発明者 大出 浩輔 兵庫県尼崎市下坂部3丁目11番1号 日立 機電工業株式会社内 Fターム(参考) 4D059 AA05 BK12 CA16 CA28 CB30 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideaki Hamada 3-1-1, Shimosakabe, Amagasaki-shi, Hyogo Inside Hitachi Kiden Kogyo Co., Ltd. (72) Inventor Takuya Ando 3-1-1, Shimosakabe, Amagasaki-shi, Hyogo No. Hitachi Kiden Kogyo Co., Ltd. (72) Inventor Kosuke Oide 3-1-1, Shimosakabe, Amagasaki City, Hyogo Prefecture F-Term in Hitachi Kiden Kogyo Co., Ltd. 4D059 AA05 BK12 CA16 CA28 CB30
Claims (2)
と、該減圧槽内を減圧し、汚泥中の微生物の細胞膜を破
壊する減圧手段とを備えたことを特徴とする汚泥の処理
装置。An apparatus for treating sludge, comprising: a decompression tank for sealing and sealing a sludge; and a decompression means for decompressing the inside of the decompression tank and destroying a cell membrane of microorganisms in the sludge. .
備減圧槽と、該予備減圧槽内を減圧する真空ポンプと、
減圧槽と予備減圧槽を開閉可能に接続するバルブとを備
えて構成し、減圧した予備減圧槽と減圧槽をバルブを開
いて連通させ、減圧槽の圧力を急激に低下させることを
特徴とする請求項1記載の汚泥の処理装置。2. A pressure reducing means comprising: a preliminary pressure reducing tank having a larger capacity than the pressure reducing tank; a vacuum pump for reducing the pressure in the preliminary pressure reducing tank;
It is provided with a valve that opens and closes the decompression tank and the preliminary decompression tank, and opens the valve to communicate the depressurized predecompression tank and the decompression tank, thereby rapidly reducing the pressure of the decompression tank. The sludge treatment apparatus according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000260136A JP2002066595A (en) | 2000-08-30 | 2000-08-30 | Treating equipment for sludge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000260136A JP2002066595A (en) | 2000-08-30 | 2000-08-30 | Treating equipment for sludge |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2002066595A true JP2002066595A (en) | 2002-03-05 |
Family
ID=18748190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000260136A Pending JP2002066595A (en) | 2000-08-30 | 2000-08-30 | Treating equipment for sludge |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2002066595A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008080252A (en) * | 2006-09-27 | 2008-04-10 | Nikkan Tokushu Kk | Apparatus and method for volume-reducing and carbonizing sludge and system for treating organic waste water |
JP2010058045A (en) * | 2008-09-03 | 2010-03-18 | Daiwa House Industry Co Ltd | Method and device for preventing offensive odor generation from storage tank for dewatered sludge cake |
JP2013515597A (en) * | 2009-12-25 | 2013-05-09 | ザクルイトエ・アクツィオネルノエ・オブスチェストヴォ“ツイン・トレーディング・カンパニー” | Method for disinfecting sewage sludge |
-
2000
- 2000-08-30 JP JP2000260136A patent/JP2002066595A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008080252A (en) * | 2006-09-27 | 2008-04-10 | Nikkan Tokushu Kk | Apparatus and method for volume-reducing and carbonizing sludge and system for treating organic waste water |
JP2010058045A (en) * | 2008-09-03 | 2010-03-18 | Daiwa House Industry Co Ltd | Method and device for preventing offensive odor generation from storage tank for dewatered sludge cake |
JP2013515597A (en) * | 2009-12-25 | 2013-05-09 | ザクルイトエ・アクツィオネルノエ・オブスチェストヴォ“ツイン・トレーディング・カンパニー” | Method for disinfecting sewage sludge |
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