JPH08276199A - Treatment of sludge - Google Patents

Treatment of sludge

Info

Publication number
JPH08276199A
JPH08276199A JP7082549A JP8254995A JPH08276199A JP H08276199 A JPH08276199 A JP H08276199A JP 7082549 A JP7082549 A JP 7082549A JP 8254995 A JP8254995 A JP 8254995A JP H08276199 A JPH08276199 A JP H08276199A
Authority
JP
Japan
Prior art keywords
sludge
kiln
water
raw material
containing sludge
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
JP7082549A
Other languages
Japanese (ja)
Other versions
JP3344448B2 (en
Inventor
Masayasu Yamazaki
正康 山崎
Koichi Hashimoto
光一 橋本
Michiro Ishizaki
倫朗 石崎
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
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
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Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP08254995A priority Critical patent/JP3344448B2/en
Publication of JPH08276199A publication Critical patent/JPH08276199A/en
Application granted granted Critical
Publication of JP3344448B2 publication Critical patent/JP3344448B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

PURPOSE: To efficiently subject sewage sludge to final disposal without applying pretreatment such as drying or the addition of additives thereto by directly introducing water-containing sludge to the kiln tail part of a dry kiln or a calcination furnace to incinerate the same. CONSTITUTION: A suspension preheater 3 is connected to the upper part of the kiln tail part 2A of a rotary kiln 2 and a cement raw material ground by a raw material mill is preheated by the preheater 3 to be charged in the kiln tail part 2A of the rotary kiln 2 and baked to produce mement clinker. Therefore, the water-containing sludge charged in the kiln tail part 2A of the rotary kiln 2 is baked along with the heated cement raw material to be discharged as cement clinker. As mentioned above, when water-containing sludge is sent through piping under pressure to be directly subjected to incineration treatment, a problem of an offensive smell or the like is not generated. Even when water-containing sludge is introduced into a calcination furnace, stable operation is performed in the same way without exerting any effect on the quality of cement clinker.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は汚泥処理方法に係り、特
に、下水汚泥等の含水汚泥を、乾燥、添加剤添加等の前
処理を施すことなく、効率的に最終処分する方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge treatment method, and more particularly to a method for efficiently and finally disposing of water-containing sludge such as sewage sludge without performing pretreatment such as drying and addition of additives.

【０００２】[0002]

【従来の技術】下水処理場から排出される下水汚泥等の
汚泥の処理法としては、古来、肥料として利用される場
合もあったが、汚泥に重金属類が含有されていること、
及び、肥料としての利用では処理量があまりに少ないこ
となどの理由から、最近では、陸上埋立て及び海上投棄
が主流となっている しかしながら、下水処理場からの下水汚泥排出量は、首
都圏を中心に、近年、増々増加傾向にあり、陸上埋立て
や海上投棄処分のための処分場の不足、更には、環境汚
染防止上の制約を受けて、汚泥処理は焼却処分に移行し
ているのが現状である。この汚泥の焼却方法としては、
既にいくつかの方法が提案されている。2. Description of the Related Art As a method for treating sludge such as sewage sludge discharged from a sewage treatment plant, it has been used as a fertilizer since ancient times, but the sludge contains heavy metals,
In addition, landfill and offshore dumping have become the mainstream these days because of the very small amount of waste used as fertilizer.However, sewage sludge emissions from sewage treatment plants are mainly in the Tokyo metropolitan area. In recent years, the sludge treatment is shifting to incineration due to the shortage of disposal sites for land reclamation and dumping at sea, and restrictions on prevention of environmental pollution. The current situation. As a method of incinerating this sludge,
Several methods have already been proposed.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、従来の
焼却炉による汚泥焼却方法では、焼却に先立ち汚泥を乾
燥する必要がある。また、乾燥排ガスを脱臭する必要も
ある。このため、焼却コスト、乾燥コスト及び脱臭コス
トが嵩み、処理コストが高くつくという欠点がある。However, in the conventional sludge incineration method using an incinerator, it is necessary to dry the sludge before incineration. It is also necessary to deodorize the dry exhaust gas. Therefore, there are disadvantages that the incineration cost, the drying cost and the deodorizing cost increase and the processing cost becomes high.

【０００４】汚泥の乾燥に生石灰を用い、汚泥中の水分
と生石灰との反応で消石灰を生成させると共に、反応熱
を利用して残留水分を乾燥させることにより汚泥を空気
圧送可能な状態に乾燥させ、乾燥物をセメント原料とし
て利用する方法も提案されているが、この方法でも、汚
泥の乾燥のために生石灰を添加する必要があるという不
具合がある。Quicklime is used to dry the sludge, and slaked lime is produced by the reaction between the water in the sludge and the quicklime. At the same time, the residual water is dried using the heat of reaction to dry the sludge in a state in which it can be pneumatically fed. Although a method of using a dried product as a cement raw material has been proposed, this method also has a problem that quick lime needs to be added for drying sludge.

【０００５】本発明は上記従来の問題点を解決し、下水
汚泥等の含水汚泥を、乾燥、添加剤添加等の前処理を施
すことなく、効率的に最終処分する汚泥処理方法を提供
することを目的とする。The present invention solves the above-mentioned conventional problems and provides a sludge treatment method for efficiently and finally disposing of water-containing sludge such as sewage sludge without performing pretreatment such as drying and addition of additives. With the goal.

【０００６】[0006]

【課題を解決するための手段】請求項１の汚泥処理方法
は、含水汚泥を、直接、乾式キルンの窯尻部分又は仮焼
炉に導入して焼却することを特徴とする。The sludge treatment method according to claim 1 is characterized in that the water-containing sludge is directly introduced into the kiln butt portion of a dry kiln or a calcination furnace and incinerated.

【０００７】請求項２の汚泥処理方法は、請求項１の方
法において、該乾式キルンはセメント原料を焼成してセ
メントクリンカーを製造する乾式キルンであることを特
徴とする。The sludge treatment method of claim 2 is the method of claim 1, wherein the dry kiln is a dry kiln for producing a cement clinker by firing a cement raw material.

【０００８】以下、図面を参照して本発明を詳細に説明
する。The present invention will be described in detail below with reference to the drawings.

【０００９】図１は本発明の汚泥処理方法の一実施例方
法を示す模式的な断面図である。FIG. 1 is a schematic sectional view showing a method of one embodiment of the sludge treatment method of the present invention.

【００１０】本実施例においては、含水汚泥（例えば、
下水処理場の沈降汚泥）を、含水スラリー状のまま、乾
式キルンの窯尻部分に直接投入して焼却する。即ち、下
水処理場から排出された下水汚泥等の含水汚泥は、ま
ず、汚泥受入設備から一旦、圧送ポンプＰ1 を備える配
管１１を経て汚泥タンク１に貯留し、この汚泥タンク１
から随時圧送ポンプＰ2 を備える配管１２を経て乾式ロ
ータリーキルン２の窯尻部分２Ａよりキルン１内に直接
投入する。In this embodiment, water-containing sludge (for example,
Settled sludge from a sewage treatment plant) is put directly into the kiln bottom of a dry kiln and incinerated in the form of a water-containing slurry. That is, water-containing sludge such as sewage sludge discharged from a sewage treatment plant is first stored in a sludge tank 1 from a sludge receiving facility through a pipe 11 equipped with a pressure feed pump P 1 , and stored in the sludge tank 1.
Then, it is directly charged into the kiln 1 from the kiln butt portion 2A of the dry rotary kiln 2 through a pipe 12 equipped with a pressure feed pump P 2 .

【００１１】このロータリーキルン２の窯尻部分の上部
には、サスペンションプレヒータ３が連設されており、
図示しない原料ミルで粉砕されたセメント原料を、この
プレヒータ３で予熱した後、ロータリーキルン２の窯尻
部分２Ａに投下し、キルン２内で焼成してセメントクリ
ンカーを製造するように構成されている。A suspension preheater 3 is continuously provided above the kiln butt of the rotary kiln 2.
The cement raw material crushed by a raw material mill (not shown) is preheated by the preheater 3, then dropped on the kiln butt portion 2A of the rotary kiln 2 and fired in the kiln 2 to produce a cement clinker.

【００１２】従って、ロータリーキルン２の窯尻部分２
Ａに投入された含水汚泥は、加熱されたセメント原料と
共に焼成され、セメントクリンカーとして排出される。Therefore, the kiln butt portion 2 of the rotary kiln 2
The water-containing sludge thrown into A is fired together with the heated cement raw material and discharged as cement clinker.

【００１３】このように、含水汚泥を配管圧送して直接
焼却処理する場合には、臭気等の問題が生起することも
ない。As described above, when the water-containing sludge is pressure-fed by piping to be directly incinerated, problems such as odor do not occur.

【００１４】なお、仮焼炉を有するセメント焼成設備の
場合にあっては、含水汚泥を仮焼炉に投入して焼却する
ようにしても良い。In the case of a cement burning facility having a calcining furnace, the water-containing sludge may be put into the calcining furnace and incinerated.

【００１５】本発明の方法においては、既存の乾式キル
ンに、その運転条件を特に変更することなく含水汚泥を
投入して焼却処分するのが好ましく、この点からは、投
入する含水汚泥を所定値以下とする必要がある。In the method of the present invention, it is preferable to add the water-containing sludge to the existing dry kiln and incinerate it without changing the operating conditions, and from this point, the water-containing sludge to be supplied has a predetermined value. Must be:

【００１６】例えば、９０〜１００ｔ／ｈｒの割合でセ
メントクリンカーを生産しているロータリーキルンに通
常の下水汚泥を導入して焼却処分する場合、下水汚泥の
投入量は９〜１０ｔ／ｈｒとし、製造されるセメントク
リンカーの重量に対して１／９〜１／１１程度の含水汚
泥を投入するようにするのが好ましい。For example, in the case of introducing ordinary sewage sludge into a rotary kiln that produces cement clinker at a rate of 90 to 100 t / hr for incineration, the sewage sludge is supplied at a rate of 9 to 10 t / hr. It is preferable to add about 1/9 to 1/11 of the hydrous sludge to the weight of the cement clinker.

【００１７】[0017]

【作用】本発明によれば、含水汚泥を、乾燥することな
く、また、添加剤を用いて前処理することなく、直接、
既存の簡易な焼却設備である乾式キルンに投入してセメ
ント原料と共に焼却処理することができる。キルンに投
入された含水汚泥は、その殆どが水分と有機成分である
ため、焼却により残留する灰分はごく微量であり、セメ
ントクリンカーの品質に影響を及ぼすこともなく、通常
運転を行える。According to the present invention, the hydrous sludge is directly dried without drying and without pretreatment with an additive.
It can be put into a dry kiln, which is an existing simple incineration facility, and incinerated together with the cement raw material. Most of the water-containing sludge charged into the kiln consists of water and organic components, so the amount of ash remaining after incineration is very small, and normal operation can be performed without affecting the quality of the cement clinker.

【００１８】[0018]

【実施例】以下に具体的な実施例を挙げて、本発明をよ
り詳細に説明する。EXAMPLES The present invention will be described in more detail with reference to specific examples.

【００１９】実施例１ 下記表１に示す組成の下水汚泥を、図１に示す如く、乾
式キルン（９０〜１００ｔ／ｈｒのセメントクリンカー
を生産している乾式キルン）の窯尻から１〜１０ｔ／ｈ
ｒの量で投入して、通常運転を行ったところ、セメント
クリンカーの品質に何ら影響を及ぼすことなく、安定な
運転を行うことができ、汚泥を含水スラリーのまま、前
処理することなく、直接最終処分することができた。Example 1 The sewage sludge having the composition shown in Table 1 below was, as shown in FIG. 1, 1 to 10 t / g from the kiln bottom of a dry kiln (a dry kiln producing a cement clinker of 90 to 100 t / hr). h
When the normal operation was performed by adding the amount of r, the stable operation can be performed without any influence on the quality of the cement clinker, and the sludge remains as a water-containing slurry without direct pretreatment. It was finally disposed of.

【００２０】[0020]

【表１】 [Table 1]

【００２１】なお、仮焼炉に導入した場合も同様にセメ
ントクリンカーの品質に何ら影響を及ぼすことなく、安
定な運転を行うことができ、汚泥を含水スラリーのま
ま、前処理することなく、直接最終処分することができ
た。Even when the cement clinker is introduced into the calcining furnace, stable operation can be performed without any influence on the quality of the cement clinker, and the sludge can be directly treated as a water-containing slurry without pretreatment. It was finally disposed of.

【００２２】[0022]

【発明の効果】以上詳述した通り、本発明の汚泥処理方
法によれば、下水汚泥などの含水汚泥を、乾燥や添加剤
添加等の前処理を施すことなく、また、環境汚染の問題
もなく、既存の乾式キルンで直接焼却処理することによ
り、効率的かつ低コストに最終処分することができる。As described in detail above, according to the sludge treatment method of the present invention, the water-containing sludge such as sewage sludge is not subjected to pretreatment such as drying or addition of additives, and also has a problem of environmental pollution. Instead, by incinerating directly in the existing dry kiln, final disposal can be done efficiently and at low cost.

【００２３】請求項２の汚泥処理方法によれば、汚泥焼
却灰はセメントクリンカーとして経済的に最終処理する
ことができる。According to the sludge treatment method of claim 2, sludge incineration ash can be economically final treated as cement clinker.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の汚泥処理方法の一実施例方法を示す模
式的な断面図である。FIG. 1 is a schematic cross-sectional view showing an example method of a sludge treatment method of the present invention.

【符号の説明】[Explanation of symbols]

１ 汚泥タンク ２ ロータリーキルン ２Ａ 窯尻部分 ３ プレヒータ 1 Sludge tank 2 Rotary kiln 2A Kiln butt part 3 Preheater

フロントページの続き (72)発明者 石崎 倫朗 福岡県北九州市八幡西区洞南町１番地１ 三菱マテリアル株式会社セメント開発セン ター内Front Page Continuation (72) Inventor Tomoro Ishizaki 1-chome, Konan-cho, Hachimansai-ku, Kitakyushu, Fukuoka Prefecture Mitsubishi Materials Corporation Cement Development Center

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 含水汚泥を、直接、乾式キルンの窯尻部
分又は仮焼炉に導入して焼却することを特徴とする汚泥
処理方法。1. A method for treating sludge, which comprises introducing the water-containing sludge directly into a kiln bottom of a dry kiln or a calcination furnace to incinerate it. 【請求項２】 請求項１の方法において、該乾式キルン
はセメント原料を焼成してセメントクリンカーを製造す
る乾式キルンであることを特徴とする汚泥処理方法。2. The sludge treatment method according to claim 1, wherein the dry kiln is a dry kiln for producing a cement clinker by firing a cement raw material.
JP08254995A 1995-04-07 1995-04-07 Sludge treatment method Expired - Lifetime JP3344448B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08254995A JP3344448B2 (en) 1995-04-07 1995-04-07 Sludge treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08254995A JP3344448B2 (en) 1995-04-07 1995-04-07 Sludge treatment method

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2001172198A Division JP3246509B1 (en) 2001-06-07 2001-06-07 Treatment facilities for hydrous sludge
JP2001172197A Division JP3969018B2 (en) 2001-06-07 2001-06-07 Sludge treatment method

Publications (2)

Publication Number Publication Date
JPH08276199A true JPH08276199A (en) 1996-10-22
JP3344448B2 JP3344448B2 (en) 2002-11-11

Family

ID=13777591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08254995A Expired - Lifetime JP3344448B2 (en) 1995-04-07 1995-04-07 Sludge treatment method

Country Status (1)

Country Link
JP (1) JP3344448B2 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11226597A (en) * 1998-02-13 1999-08-24 Mitsubishi Materials Corp Method for controlling amount of stock in water-containing sludge storing part
JP2000239050A (en) * 1999-02-19 2000-09-05 Taiheiyo Cement Corp Treatment of plant waste fluid
WO2007023561A1 (en) * 2005-08-26 2007-03-01 Mitsubishi Materials Corporation Method and facility for disposing wet sludge
KR100810382B1 (en) * 2005-12-30 2008-03-07 미츠비시 마테리알 가부시키가이샤 Treatment method and facility of water-containing sludge
JP2008105022A (en) * 2006-09-28 2008-05-08 Mitsubishi Materials Corp Treatment method of asbestos-containing matter using cement manufacturing process, and cement manufacturing method
JP2009179543A (en) * 2008-02-01 2009-08-13 Taiheiyo Cement Corp Method and system for fuelization of liquid containing metal powder
JP2010089994A (en) * 2008-10-08 2010-04-22 Mitsubishi Materials Corp Method and system for treating exhaust gas of cement firing facility
CN101886811A (en) * 2010-05-21 2010-11-17 尹小林 Method for coprocessing sludge with high moisture content by novel dry-process rotary kiln
WO2013129199A1 (en) * 2012-02-29 2013-09-06 三菱マテリアル株式会社 Sludge treatment facility
CN103896505A (en) * 2014-03-25 2014-07-02 同济大学 Method for adjusting and controlling feeding mode of lime-dried municipal sludge cooperatively treated with cement kiln
CN104230190A (en) * 2014-09-18 2014-12-24 环境保护部华南环境科学研究所 Method for treating arsenical sludge by utilizing rotary cement kiln
CN105032884A (en) * 2015-04-03 2015-11-11 坚构（北京）建筑技术有限公司 System and method of synergistic treatment of household garbage and energy resource comprehensive utilization with rotary cement kiln

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CN102718374A (en) * 2012-05-31 2012-10-10 郭涵 Method of utilizing vertical type cement kiln to process sludge
CN102826772A (en) * 2012-09-06 2012-12-19 鞍山市英台建筑材料有限公司 Multi-purpose rotary dry homogenizing furnace

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11226597A (en) * 1998-02-13 1999-08-24 Mitsubishi Materials Corp Method for controlling amount of stock in water-containing sludge storing part
JP2000239050A (en) * 1999-02-19 2000-09-05 Taiheiyo Cement Corp Treatment of plant waste fluid
US8141501B2 (en) 2005-08-26 2012-03-27 Mitsubishi Materials Corporation Method and facility for disposing wet sludge
WO2007023561A1 (en) * 2005-08-26 2007-03-01 Mitsubishi Materials Corporation Method and facility for disposing wet sludge
KR100810382B1 (en) * 2005-12-30 2008-03-07 미츠비시 마테리알 가부시키가이샤 Treatment method and facility of water-containing sludge
JP2008105022A (en) * 2006-09-28 2008-05-08 Mitsubishi Materials Corp Treatment method of asbestos-containing matter using cement manufacturing process, and cement manufacturing method
JP2009179543A (en) * 2008-02-01 2009-08-13 Taiheiyo Cement Corp Method and system for fuelization of liquid containing metal powder
JP2010089994A (en) * 2008-10-08 2010-04-22 Mitsubishi Materials Corp Method and system for treating exhaust gas of cement firing facility
CN101886811A (en) * 2010-05-21 2010-11-17 尹小林 Method for coprocessing sludge with high moisture content by novel dry-process rotary kiln
WO2013129199A1 (en) * 2012-02-29 2013-09-06 三菱マテリアル株式会社 Sludge treatment facility
JP2013176738A (en) * 2012-02-29 2013-09-09 Mitsubishi Materials Corp Sludge treatment facility
CN104136382A (en) * 2012-02-29 2014-11-05 三菱综合材料株式会社 Sludge treatment facility
CN103896505A (en) * 2014-03-25 2014-07-02 同济大学 Method for adjusting and controlling feeding mode of lime-dried municipal sludge cooperatively treated with cement kiln
CN104230190A (en) * 2014-09-18 2014-12-24 环境保护部华南环境科学研究所 Method for treating arsenical sludge by utilizing rotary cement kiln
CN105032884A (en) * 2015-04-03 2015-11-11 坚构（北京）建筑技术有限公司 System and method of synergistic treatment of household garbage and energy resource comprehensive utilization with rotary cement kiln

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