JPS60202800A - Treatment of water-containing material - Google Patents
Treatment of water-containing materialInfo
- Publication number
- JPS60202800A JPS60202800A JP59055998A JP5599884A JPS60202800A JP S60202800 A JPS60202800 A JP S60202800A JP 59055998 A JP59055998 A JP 59055998A JP 5599884 A JP5599884 A JP 5599884A JP S60202800 A JPS60202800 A JP S60202800A
- Authority
- JP
- Japan
- Prior art keywords
- air
- sludge
- dried
- residue
- dehydrated
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 title claims description 5
- 239000010802 sludge Substances 0.000 claims abstract description 35
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 10
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000004449 solid propellant Substances 0.000 abstract description 5
- 239000002689 soil Substances 0.000 abstract 5
- 239000000446 fuel Substances 0.000 description 7
- 239000010800 human waste Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920006317 cationic polymer Polymers 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、し尿、下水その他の有機性汚水の処理に伴っ
て発生するし渣、汚泥などの含水物の省エネルギ的な処
理方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an energy-saving method for treating water-containing materials such as sludge and sludge generated during the treatment of human waste, sewage, and other organic wastewater. It is.
従来、し尿、下水その他の有機性汚水の処理において発
生するし渣、汚泥などの含水物は、ベルトプレス、遠心
脱水機などの機械脱水機で脱水されるが、そのままでは
含水率がまだ高いため、処理、処分するに当って乾燥す
る必要がある。Conventionally, water-containing materials such as human waste, sewage, and other organic wastewater are dehydrated using mechanical dehydrators such as belt presses and centrifugal dehydrators, but the moisture content is still high. , must be dried before processing and disposal.
特に、余剰活性汚泥と凝集沈殿汚泥は、混合されたのち
カチオンポリマなどの脱水助剤が添加されて機械脱水さ
れるが、脱水ケーキの含水率が８０％台と高いことが多
く、乾燥に多量の有価燃料を消費せざるを得す、処理施
設の維持管理費の負担が過大となっているという最大の
問題点がある。In particular, excess activated sludge and flocculated sludge are mixed and then mechanically dehydrated by adding a dehydration aid such as a cationic polymer, but the moisture content of the dehydrated cake is often as high as 80%, and a large amount is required for drying. The biggest problem is that the cost of maintaining and managing the treatment facility is excessive, forcing the consumption of valuable fuel.
しかしながら、有機性汚水処理に伴って不可避的に発生
する前記含水物を滞りなく処分するためには、前記問題
点はやむを得ないと考えられていたが、合理的な省エネ
ルギ的な乾燥処理方法の開発が切望されている。However, in order to smoothly dispose of the water-containing substances that are inevitably generated in organic wastewater treatment, the above problems were considered to be unavoidable. Development is desperately needed.
本発明は、従来全く利用されることがなかった有機性汚
水中に含まれる紙類、毛髪などのし渣を燃料化し、これ
を汚泥の乾燥用に利用するという、新規な技術思想にも
とづき、全く無燃費できわめて省エネルギ的にこれら含
水物の処理を行い、当該分野における要請を十分に満足
させることができる処理方法を提供することを目的とす
るものである。The present invention is based on the novel technical concept of converting paper, hair, and other residues contained in organic sewage, which have never been used in the past, into fuel and using this for drying sludge. It is an object of the present invention to provide a treatment method that can treat these water-containing substances in a completely fuel-free and extremely energy-saving manner, and can fully satisfy the demands in the field.
本発明は、有機性汚水処理において発生したし渣を脱水
し、得られた脱水し渣を前記有機性汚水処理に使用され
る曝気プロワの吐出空気の保有熱により乾燥し、得られ
た乾燥し渣を焼却し、該焼却時の燃焼生成熱を前記有機
性汚水処理において発生した汚泥の乾燥に利用すること
を特徴とするものである。The present invention dehydrates residue generated in organic sewage treatment, and dries the obtained dehydrated residue using the retained heat of the air discharged from an aeration blower used in the organic sewage treatment. The present invention is characterized in that the residue is incinerated and the heat produced by combustion during the incineration is used for drying the sludge generated in the organic sewage treatment.
本発明の一実施例を図面を参照しながら説明すれば、バ
キュームカーなどによって搬入されたし尿１は、図示し
ない破砕機を通ったのち、微細目のスクリーン２によっ
てし尿中のトイレットペーパー、毛髪、綿などのし渣７
が除去され、除渣し尿６は曝気槽４と沈殿池５等からな
る生物学的硝化脱窒素工程などの生物処理工程に供給さ
れ処理されたのち、生物処理水６となって流出する。一
方、スクリーン２によって除去回収された含水率９５％
程度のし渣７は、スクリュープレス脱水機その他の脱水
機８によって含水率５０〜５５チに脱水されて脱水し渣
９どなる。An embodiment of the present invention will be described with reference to the drawings. After passing through a crusher (not shown), human waste 1 brought in by a vacuum car or the like is passed through a fine mesh screen 2 to remove toilet paper, hair, etc. Cotton residue 7
is removed, and the removed human waste 6 is supplied to a biological treatment process such as a biological nitrification and denitrification process comprising an aeration tank 4, a settling tank 5, etc., where it is treated, and then flows out as biologically treated water 6. On the other hand, the moisture content removed and recovered by screen 2 is 95%.
The graded residue 7 is dehydrated by a screw press dehydrator or other dehydrator 8 to a moisture content of 50 to 55 cm, and becomes a dehydrated residue 9.
次に、脱水し渣９は、密閉型の通気乾燥器１０に供給さ
れて充填層１１を形成し、この充填層１１に、前記曝気
槽４に曝気用空気を供給する曝気ブロワ１２の吐出空気
１６を通気し、その排出空気１４を曝気槽４に供給する
。Next, the dehydrated residue 9 is supplied to a closed type aerated dryer 10 to form a packed bed 11, and the discharged air of an aeration blower 12 that supplies aeration air to the aeration tank 4 is supplied to this packed bed 11. 16 is aerated and the discharged air 14 is supplied to the aeration tank 4.
この曝気ブロワ１２の吐出空気１６は、空気の断熱圧縮
効果によって温度が上昇し６０〜８０ ’Ｃにも達する
ので、脱水し渣９の充填層１１内に通気することによっ
て脱水し渣９は効果的に乾燥され、含水率１０％以下の
乾燥し渣１５となり、固形燃料化される。すなわち、脱
水し渣９は、繊維分を主体としているため、通気乾燥器
１０内に充填層１１を形成させたとき、汚泥のような相
互の付着、圧密現象がほとんどないため、良好な通気性
を確保することができること、汚泥の脱水ケーキに比べ
て含水率が低いので、脱水し渣９を乾燥するための所要
熱量は、高水分の汚泥脱水ケーキを乾燥するための所要
熱量よりもはるかに少量でよく。The temperature of the air 16 discharged from this aeration blower 12 increases due to the adiabatic compression effect of the air, reaching 60 to 80'C. It is dried to form a dried residue 15 with a moisture content of 10% or less, which is converted into solid fuel. That is, since the dewatered residue 9 is mainly composed of fibers, when the packed bed 11 is formed in the ventilation dryer 10, there is almost no mutual adhesion or compaction phenomenon like sludge, so it has good air permeability. Since the water content is lower than that of the sludge dewatered cake, the amount of heat required to dehydrate and dry the residue9 is much greater than the amount of heat required to dry the high moisture sludge dehydrated cake. A small amount is enough.
保有熱量としてはかなり小さい曝気プロワ１２の吐出空
気１６によって、効果的に乾燥し固形燃料化することが
できる。The air 16 discharged from the aeration blower 12, which has a considerably small amount of heat, can effectively dry the fuel and turn it into solid fuel.
また、前記生物処理工程の沈殿池５にて沈殿した活性汚
泥は返送汚泥１６として生物処理工程で利用され、余剰
活性汚泥１７は遠心脱水機、ベルトプレスなどの各種機
械脱水機１８で脱水され。In addition, the activated sludge precipitated in the sedimentation tank 5 of the biological treatment process is used as return sludge 16 in the biological treatment process, and the surplus activated sludge 17 is dehydrated with various mechanical dehydrators 18 such as a centrifugal dehydrator and a belt press.
含水率８０％程度の脱水ケーキ１９となり、汚泥乾燥器
２０に供給される。汚泥乾燥器２０における脱水ケーキ
１９の乾燥は、重油などの有価燃料を使用することなく
、前述した乾燥し渣１５を固形燃料として焼却炉２１に
おいて燃焼用空気２２を導入して自燃させ、その燃焼生
成ガス２６を汚泥乾燥器２０に供給し、乾燥用熱源とし
て利用する。このとき、焼却炉２１の燃焼生成ガス２６
の温度は６００〜８００℃程度であり、その保有熱量は
含水率８０％の脱水ケーキ１９を含水率４０％以下に乾
燥するのに十分であることが確認された。A dehydrated cake 19 with a moisture content of about 80% is formed and is supplied to a sludge dryer 20. The dehydrated cake 19 is dried in the sludge dryer 20 without using valuable fuel such as heavy oil, and the above-mentioned dried residue 15 is used as solid fuel to be self-combusted by introducing combustion air 22 into the incinerator 21. The produced gas 26 is supplied to the sludge dryer 20 and used as a heat source for drying. At this time, the combustion generated gas 26 of the incinerator 21
The temperature was about 600 to 800° C., and it was confirmed that the amount of heat it possessed was sufficient to dry the dehydrated cake 19 with a moisture content of 80% to a moisture content of 40% or less.
このようにして汚泥乾燥器２０で乾燥された乾燥汚泥２
４は、貯槽２５に貯留されるが、この乾燥汚泥２４の一
部２４′を焼却炉２１に供給して乾燥し渣１５と混焼さ
せると、燃焼生成ガス２６の保有熱量を大きく増加させ
ることができるから、汚泥の脱水ケーキ１９を含水率１
０〜２０％程度にまで乾燥させることができる。Dried sludge 2 dried in the sludge dryer 20 in this way
4 is stored in the storage tank 25, but if a part 24' of this dried sludge 24 is supplied to the incinerator 21, dried, and co-incinerated with the residue 15, the amount of heat retained in the combustion generated gas 26 can be greatly increased. Because it is possible, the dehydrated sludge cake 19 has a moisture content of 1
It can be dried to about 0 to 20%.
なお、汚泥乾燥器２０からの乾燥排ガス２６及び焼却炉
２１からの焼却残渣２７は系外へ排出される。Note that the dried exhaust gas 26 from the sludge dryer 20 and the incineration residue 27 from the incinerator 21 are discharged to the outside of the system.
以上述べたように本発明によれば、次のような顕著な有
益なる効果を得ることができるものである。As described above, according to the present invention, the following remarkable beneficial effects can be obtained.
■ 従来、多大の燃費を要していた汚泥の脱水ケーキの
乾燥工程が著しく合理化され、燃費が不要となる。■ The process of drying the sludge dewatering cake, which conventionally required a large amount of fuel consumption, has been significantly streamlined and no longer requires fuel consumption.
■ 汚水から除去回収したし渣を機械脱水して得た脱水
し渣を、曝気ブロワの吐出空気で乾燥するので、乾燥器
内での汚泥のような付−着、大塊化、圧密、ペタツキが
なく、良好な通気条件を確保することができ、しかも脱
水し渣の含水率は５０％台であり、脱水汚泥の含水率（
８０％程度）よりもはるかに低いので、保有熱量として
は大きなものとはいえない曝気ブロワの吐出空気の保有
熱量によって十分に低水分にまで乾燥をすることができ
、またし渣を燃料化することができる。■ The dehydrated residue obtained by mechanical dewatering of the residue removed and collected from wastewater is dried with the discharge air of the aeration blower, so there is no possibility of sludge-like adhesion, large clumps, compaction, or flattening in the dryer. The moisture content of the dehydrated sludge is in the 50% range, and the moisture content of the dehydrated sludge (
(about 80%), so the heat content of the air discharged from the aeration blower is not large, but the heat content of the air discharged from the aeration blower can be used to dry the residue to a sufficiently low moisture level, and the residue can also be used as fuel. be able to.
■ 汚水処理に伴って発生する汚泥の乾燥用熱源を、も
ともと汚水中に存在していたし渣を利用することによっ
て、外部から重油などの資源を投入する必要がなく、汚
水処理プロセス系内で自己充足させることができる。■ By using the sludge that originally existed in the sewage as a heat source for drying the sludge generated during sewage treatment, there is no need to input resources such as heavy oil from outside, and the heat source can be used internally within the sewage treatment process system. can be fulfilled.
図面は本発明の一実施例を示す系統説明図である。
１・・・し尿、２・・・スクリーン、６・・・除渣し尿
。
４・・・曝気槽、５・・・沈殿池、６・・・生物処理水
、７・・・し渣、８・・・脱水機、９・・・脱水し渣、
１０・・・通気乾燥器、１１・・・充填層、１２・・・
曝気ブロワ、１６・・・吐出空気、１４・・・排出空気
、１５・・・乾燥し渣、１７・・・余剰活性汚泥、１８
・・・機械脱水機、１９・・・脱水ケーキ、２０・・・
汚泥乾燥器、２１・・・焼却炉、２６・・・燃焼生成ガ
ス、２４．２４’・・・乾燥汚泥。
特許出願人 荏原インフィルコ株式会社代理人弁理士
高 木 正 行The drawing is a system explanatory diagram showing an embodiment of the present invention. 1... Human waste, 2... Screen, 6... Sludge removed human waste. 4... Aeration tank, 5... Sedimentation tank, 6... Biologically treated water, 7... Sludge, 8... Dehydrator, 9... Dehydrated residue,
10... Ventilation dryer, 11... Filled bed, 12...
Aeration blower, 16... Discharge air, 14... Discharge air, 15... Dry residue, 17... Excess activated sludge, 18
...Mechanical dehydrator, 19...Dehydrated cake, 20...
Sludge dryer, 21...Incinerator, 26...Combustion generated gas, 24.24'...Dried sludge. Patent applicant: Patent attorney representing Ebara Infilco Co., Ltd.
Masayuki Takagi
Claims (1)
られた脱水し渣を前記有機性汚水処理に使用される曝気
ブロワの吐出空気の保有熱により乾燥し、得られた乾燥
し渣を焼却し、該焼却時の燃焼生成熱を前記有機性汚水
処理において発生した汚泥の乾燥に利用することを特徴
とする含水物の処理方法。 ２、 前記乾燥し渣を焼却するに際し、前記汚泥の乾燥
物の一部を混焼するものである特許請求の範囲第１項記
載の含水物の処理方法。[Scope of Claims] 1. Dehydrated residue generated in organic sewage treatment, and dried the obtained dehydrated residue using the heat retained in the discharged air of the aeration blower used in the organic sewage treatment. A method for treating water-containing materials, characterized in that the dried residue is incinerated, and the heat produced by combustion during the incineration is used for drying the sludge generated in the organic sewage treatment. 2. The method for treating water-containing material according to claim 1, wherein a part of the dried sludge is co-incinerated when the dried residue is incinerated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59055998A JPS60202800A (en) | 1984-03-26 | 1984-03-26 | Treatment of water-containing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59055998A JPS60202800A (en) | 1984-03-26 | 1984-03-26 | Treatment of water-containing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60202800A true JPS60202800A (en) | 1985-10-14 |
| JPH0375240B2 JPH0375240B2 (en) | 1991-11-29 |
Family
ID=13014746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59055998A Granted JPS60202800A (en) | 1984-03-26 | 1984-03-26 | Treatment of water-containing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60202800A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106900A (en) * | 1985-11-06 | 1987-05-18 | Ebara Infilco Co Ltd | Method for drying sludge |
| GB2403471A (en) * | 2003-07-01 | 2005-01-05 | Internat Technology Traders Lt | Organic waste disposal |
| EP4159695A1 (en) * | 2020-05-27 | 2023-04-05 | Samsung Electronics Co., Ltd. | Solid feces treatment apparatus and individual feces treatment system including same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56150499A (en) * | 1980-04-24 | 1981-11-20 | Ebara Infilco Co Ltd | Disposal of sludge |
| JPS596985A (en) * | 1982-07-05 | 1984-01-14 | Kubota Ltd | Treatment of waste water with activated sludge |
-
1984
- 1984-03-26 JP JP59055998A patent/JPS60202800A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56150499A (en) * | 1980-04-24 | 1981-11-20 | Ebara Infilco Co Ltd | Disposal of sludge |
| JPS596985A (en) * | 1982-07-05 | 1984-01-14 | Kubota Ltd | Treatment of waste water with activated sludge |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106900A (en) * | 1985-11-06 | 1987-05-18 | Ebara Infilco Co Ltd | Method for drying sludge |
| GB2403471A (en) * | 2003-07-01 | 2005-01-05 | Internat Technology Traders Lt | Organic waste disposal |
| GB2403471B (en) * | 2003-07-01 | 2006-06-28 | Internat Technology Traders Lt | Organic waste disposal |
| EP4159695A1 (en) * | 2020-05-27 | 2023-04-05 | Samsung Electronics Co., Ltd. | Solid feces treatment apparatus and individual feces treatment system including same |
| EP4159695A4 (en) * | 2020-05-27 | 2024-05-29 | Samsung Electronics Co., Ltd. | Solid feces treatment apparatus and individual feces treatment system including same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0375240B2 (en) | 1991-11-29 |
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